Loom driving mechanism



June 24, 1930. w, LUNDQREN 1,766,758

LOOM- DRIVING MECHANISM 7 Filed Dec. 5, 1929 2 Sheets-Sheet 2 WM. 5. LUNDGREN Arro /vs' r5 Fatented June 24, 1930 UNITED. STATES PAT:

T' 'QF ICE" WILLIAM E. LUNDGREN, OF WORCESTER, MASSACHUSETTS,ASSIGNORTO-CROMP TON 86 KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS,A CORPORATION F 7 MASSACHUSETTS i Loom DRIVING: MneiiAnIsM Applicationfiled December 5, "1e29,v Serial No. 411,935.

Thisinvention relates to looms and more particularly to mechanism fordriving. a harness motion of the type commonly referred to as a Knowleshead.

It is the general object of my invention to provide an improved drivefor such heads, so designed and constructed that a positive gearconnection is provided which is readily adaptable to harness motions ofdifferent owidths, designed for different numbers of harnesses.

A further object is to provide a construction by which the necessaryadjustment for changes in width may be quickly and easily made andwithout removal or replacement of arts.

p My invention further relates to arrangements and combinations of partswhich will be hereinafter described and more partic-,

ularly pointed out in the appended claims.

A preferred form of the invention is. shown in the drawings, in whichFig. 1 is aside elevation, partly in section, of my improved drivingmechanism;

Fig. 2 is a side elevation thereof, looking in the direction of thearrow 2 in Fig. 1;

Fig. 3 is a detail sectional side elevation, taken along the line 3-3 inFig. 1;

Fig. 4c is a side elevation of the parts shown in Fig. 1 but indifferent relative positions;

Fig. 5 is a side elevation of a gear cover to be used with my invention;and I Fig. 6 is a sectional elevation of the gear cover and the loomframe on which it is mounted.

Referring to the drawings, I have show portions of a Knowles headincluding a frame 10 in which harness jacks 11 are links 13 to the usualvibrator gears 14 which alternately engage upper and lower cylindergears 15 and 16 4) rotatably mounted in the frame 10. The gears 15 and16 are mounted on suitable supporting shafts and are connected by bevelgears 17 18, 19 and 20 to an upright shaft 21 rotatable in a bearing 22supported on the frame 10.

The gears 18 and 20 are axially adJustable on the shaft 21 and may besecured thereon the cover 6.

pivoted at12. The jacks are connected by by set screws 23. A collar 24isalso axially adjustable on' the shaft 21 and maybe secured by a setscrew 25. Theupper face of the collar 24'engages the under face of mentof the shaft 21. I

the bearing" 22 and prevents upward move- The lower end of the shaft isreceived in a step bearing 30, secured'by'a set screw 31 to the outerendof a stud 32, 'whichfin. turn is secured by a set screw 33 in anadjustable arm or support- 35'.

The support '35 is mounted for angular adjustment about the axis of adriving shaft 37 and maybe secured in angularly adjusted. position byclamping bolts38and 39' 3); The bolt 38 extends through a segmentalslotltO in the arm 35 and the bolts 39 extend through: short segmentalslots 41 in'the upper end of the arm-3 5 and also extend throughselected slots 42 in the loom side 44:. The slots 42 are arranged in asegmental series about the axis of the shaft 37 as a center. 7 p

A pinion 50 is secured to thefend ofj the driving shaft 37 and engagesan intermediate gear'51 loose on the stud 22 and'connected .by abevelgear 52to. a second bevel gear 53 rotatable aboutth'e axis of the shaft21 and commonly secured to rotate there- A gear cover (Figs. 5 and 6)maybe secured by clamping bolts. 61 extending through certain of thesegmentally' arranged slots 12; Anbuter geari "cover 63 may be securedto the cover 60 by clamping bolts- 64 extendingthrough segmentalslots'65 in Having described the details of construc tion of improvedharness motion drive, the method of [operation and advantages thereofareas follows y If a relatively narrow head withfewhan' nesses is inuse, the parts'may assume the position shown in Figs. 1 and 2, in whichthe stud 32 is approximatelyvertically aligned with the driving. shaft37 L If a wider head is substituted, the upright shaft 21 will naturally be found further to the left,'as shown inFig.4.

In order to provide a positive gear drive with the parts as shown inFig. 4, it is merely necessary to loosen the set screws 23-23 and 31, sothat the bevel gears 18 and 20 may be adjusted axially on the shaft 21,and so that the step bearing may be adjusted angularly on the stud 32.The support is then adjusted angularlyabout the axis of the shaft 37, soas to bring the step bearing 30 in vertical alignment with the newposition of the upright shaft 21. The support 35 is then clamped to theloom side 44:, the step bearing 30 is secured to the stud 32, and thebevel gears 18 and 20 are adjusted axially to engage the bevel gears 17and 19 on the shafts of the cylinder gears 15 and 16. The bevel gears 18and 20 are then secured to the shaft 21, and the collar 24 is adjustedto take up vertical lost motion of the shaft By these simpleadjustments, a positive gear drive is provided for the harness motion,regardless of its increase in width, and a similar adjustment may besecured for other harness motions of either greater or less width, allwithout removal or replacement of parts or substitutions therefor.

The gear covers 60 and.-63 may also be conveniently adjusted to protectthe operator in any angular position of the support 35 and gears mountedthereon.

Having thus described my invention and the advantages thereof, I do notwish to be limited to the details herein disclosed, otherwise than asset forth in the claims, but what I claim is':+

1; In a loom having a head motion with upper and lower cylinder gears, asubstantially upright shaft and bevel gears connecting said shaft torotate said cylinder gears, in combination, a driving shaft, a pinion onsaid shaft, an intermediate gear meshing therewith and mounted foradjustment about the axis of said drivingshaft, and bevel gearsconnecting said intermediate gear with the lower end of said uprightshaft.

2. In a loom having a head motion with upper ,and lower cylinder gears,asubstantially upright shaft and bevel gears connecting said shaft torotate said cylinder gears,

in combination, a driving shaft, a pinion on said shaft, an intermediategear meshing therewith, a supporting arm mounted for angular adjustmentabout the axis of said driving shaft, ,a bearing stud on said arm forsaid intermediate gear, and a bevel gear connection between saidintermediate and said upright shaft.

.3. The combination in a loom as set forth in claim 2, in which the studis fixed in the supporting arm and supports an angularly adjustable stepbearing for the lower end of said upright shaft, and in which theintermediate gear is freely rotatable on said stud.

4. The combination in a loom as set forth gear in claim 2, in-which thebevel gears on the upright shaft are axially adjustable on said shaft toestablish driving connection With said cylinder gears in every operativeposition of said support and shaft.

5. The combinationin a loom as set forth inclaim 2, in which the bevelgears on the upright shaft are axially adjustable on said shaft toestablish driving connection with said cylinder gears in every operativeposition of said support and shaft, and in which a collar is provided onsaid shaft and adjustable axially thereon to prevent axial lost motionthereof.

In testimony whereof I have hereunto affixed my signature.

WILLIAM E. LUNDGREN.

